The effect of dye and metals salts on white cement curing and properties of decorative wood wool-cement composite

Document Type : Complete scientific research article

Authors

1 Graduate in lignocellulosic composites, Wood Technology and Engineering Department, Faculty of Wood and Paper Engineering, Gorgan University of Agricultural Sciences & Natural Resources

2 Assistant Professor,Department of Wood Engineering and Technology, University of Agricultural Sciences and Natural Resources,Gorgan, IRAN,

3 Professor of Wood Technology and Engineering Department, Faculty of Wood and Paper Engineering, University of Agricultural Sciences and Natural Resources, Gorgan. Iran.

4 Associate Professor of Wood Technology and Engineering Department, Faculty of Wood and Paper Engineering, University of Agricultural Sciences and Natural Resources, Gorgan. Iran.

Abstract

Abstract
Background and Objectives: The use of new materials with competitive features in the construction industry has always been considered. The stage of finishing and interior decoration is also considered an important part of this dynamic industry, which is closely related to the wood products industry. In this study, the optimal conditions for making decorative wood wool cement board were investigated. The aim of this study was to investigate the effect of water-based paint on the hardening of white cement and improve the quality of the bonding in this decorative panel using metal salts.

Materials and Methods: The wood wool were first pretreated with hot salty water to remove the inhabitant compounds. For this purpose, the wood wool piles are mixed with white cement, accelerator (sodium chloride and calcium chloride), water and plastic paint in a certain ratio and after manual forming were placed in cold press for 20 minutes for initial compression. Then for initial setting of cement and reaching a thickness of 16 mm, it was placed in a secondary cold press for 18 hours. After leaving the cold press, the produced panels were conditioned for 28 days in order to completely setting the cement. Then their physical and mechanical properties were measured according to the relevant standards.

Results: The results of this study showed that the best mechanical properties were related to panels made with calcium chloride and in these conditions the highest modulus of elasticity (MOE) was related to calcium chloride with a level of 5% equal to 1217.9 MPa. In case of flexural strength (MOR) and internal bonding (IB), the highest results were observed in treatments with 3% Calcium chloride and was equal to 3.7 and 0.15 MPa, respectively. Also, the optimal conditions for improving the physical properties were determined by applying sodium chloride at the level of 5%, in that the water absorption (WA) and thickness swelling (TS) were determined 7.9% and 0.43% respectively.

Conclusion: By adding the paint to production process of wood wool cement board, the curing time was increased and caused reduction in some properties. But with adding metal salts, the curing rate was improved and the reduction in almost properties was compensated. Salt type had significant influence on properties like MOE, IB, WA24h and TS24hvwhile the effect of salt amount was only significant on MOE and WA24h.
Regarding to the variety of application and special characteristics of WWCB, including sound absorption, dimensional stability, fire resistance, abundance and cheapness of raw materials, no complexity of the production process, no emission of toxic compounds such as formaldehyde, it could be suitable choice for decorative purposes in building industries.

Keywords

References

1.Peng, X., and Zhang, Z. 2020. Research of polypropylene (PP) decorative board surface painting used for wood product decoration and the paint film adhesion improvement by plasma. J. of Adhesion Science and Technology. 34: 3. 246-262.
2.Ashori, A., Tabarsa, T., Azizi, K., and Mirzabeygi, R. 2011. Wood–wool cement board using mixture of eucalypt and poplar. Industrial Crops and Products.34: 1. 1146-1149.
3.Nazerian, M., and Sadeghiipanah, V. 2013. Cement-bonded particleboard with a mixture of wheat straw and
poplar wood. J. of Forestry Research,24: 2. 381-390.
4.Brahmia, F.Z., Horváth, P.G., and Alpár, T.L. 2020. Effect of Pre-Treatments and Additives on the Improvement of Cement Wood Composite: A Review. BioResources. 15: 3. 7288-7308.
5.Li, M., Khelifa, M., Khennane, A., and El Ganaoui, M. 2019. Structural response of cement-bonded wood composite panels as permanent formwork. Composite Structures. 209: 13-22.
6.Nasiri, H., Ainollahi, Y., and Habashizadeh, M. 2011. Cement wood composites as an engineering material. The First Regional Conference on construction materials and new technologies in civil engineering. Marand Islamic Azad University, Marand Branch. pp. 1-9. (In Persian)      
7.Fonseca, C.S., Silva, M.F., Mendes, R.F., Hein, P.R., Zangiacomo, A.L., Savastano, H., and Tonoli, G.H.D. 2019. Jute fibers and micro/nano fibrils as reinforcement in extruded fiber-cement composites. Construction and Building Materials.
211: 517-527. 
8.Lyatonga Mrema, A. 2006. Cement bonded wood wool boards from Podocarpus ssp. for Low Cost Housing. J. of Civil Engineering Research and Practive. 3: 1. 51-64.
9.Teixeira, R.S., Tonoli, G.H.D., Santos, S.F.D., Rayon, E., Amigo, V., Savastano, H., and Lahr, F.R. 2018. Nanoindentation study of the interfacial zone between cellulose fiber and cement matrix in extruded composites. Cement and Concrete Composites. 85: 1-8.
10.Li, Y., and Ren, S. 2011. Building decorative materials (1st Edition). Woodhead Publishing. Cambridge. United Kingdom. 420p.
11.Gan, L., Guo, H., Xiao, Z., Jia, Z., Yang, H., Sheng, D., and Wang, Y. 2019. Dyeing and characterization of cellulose powder developed from waste cotton. Polymers. 11: 12. 1982.
12.Ashori, A., Tabarsa, T., and Sepahvand, S. 2012. Cement-bonded composite boards made from poplar strands. Construction and Building Materials. 26: 1. 131-134.
13.Nazerian, M., Gozali, E., and Dahmardeh Ghalehno, M. 2011. The influence of wood extractives on the hydration kinetics of cement past and cement-bonded particleboards. J. of Applied Sciences. 11: 12. 2186-2192.
14.Mehanny, S., Ibrahim, H., Darwish, L., Farag, M., El-Habbak, AH.M., and El-Kashif, E. 2020. Effect of environmental conditions on date palm fiber composites. In: Midani M.,Saba N., Alothman O.Y. (eds) Date Palm Fiber Composites. Composites Science and Technology. Springer, Singapore. https://doi.org/10.1007/978-981-15-9339-0_11.
15.Doosthoseini, K. 2007. Wood composite materials: manufacturing, applications. Tehran University Press. 728p. (In Persian)
16.Sadeghi Panah, V., Nazerian, M., Nosrati sheshkal, B., and Mohebbi Gargari, R. 2020. Optimization of production variables of natural fibers-cement composites by response surface methodology (RSM). Iranian J. of Wood and Paper Industries, 11: 1. 97-108.(In Persian)
17.Nazerian, M., Hosseini Eghbal, S., Kermaniyan, H., and Mohebbi Gargari, R. 2017. The effect of water leaching treatment of bagasse particles and additive content on the properties of cement-bonded particleboard. J. of Wood and Forest Science and Technology. 23: 4. 315-334. (In Persian) 
18.Noor Azrieda, A.R., Razali, A.K.,Izran, K., Rahim, S., and Abdul Aziz, M. 2009. Hydration performance of Cement bonded wood composites: compatibility assessment of six pioneer forest composition and fiber morphology. J. of Polymer and Environment. 19: 1. 297-300.
19.Sulastiningsih, I.M., Nurwati, S. Murdjoko, and Kawai, S. 2000. The effects of bamboo: cement ratio and magnesium chloride (MgCl2) content on the properties of bamboo–cement boards. Proceedings of Wood–Cement Composites in the Asia–Pacific Region, 10 December, Canberra, Australia.pp. 66-71.
20.Yazdi, M. 1996. Effect of additives on bond quality of Portland cement with poplar particles. Iranian J. of Natural Resource. 48: 1. 47-58. (In Persian)
21.Wei, Y.M., and Tomita, B. 2001. Effects of five additive materials on mechanical and dimensional properties of wood cement-bonded boards. J. of Wood Science. 47: 437-444.
22.Leelamanie, D.A.L., and Karube, J. 2013. Soil-water contact angle as affected by the aqueous electrolyte concentration. Soil Science and Plant Nutrition, 59: 4. 501-508.
23.Zhang, H.L., Chen, G.H., and Han, S.J. 1997. Viscosity and density of H2O+ NaCl+ CaCl2 and H2O+ KCl+ CaCl2 at 298.15 K. J. of Chemical and Engineering Data, 42: 3. 526-530.
Journal of Wood and Forest Science and Technology
Volume 28, Issue 2
September 2021
Pages 1-19

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